Automatic safety emergency valve for oil tanks and other containers of inflammable fluids



Feb. 23 1926. 1,573,798

vV. J. BOGGIANO AUTOMATIC SAFETY EHBRGENCY VALVE FOR OIL TANKS AND OTHER CONTAINERS 0F INFLAMMABLE FLUIDS Filed Nov. 30, 1923' p v v I Patented Feb. 23, 1926.

UNITED sures rarnnr rarer.

VICTOR J. BQGGIANO, OFxCIiICi-lGO, ILLINOIS.

AUTOMATIC SAFETY EMERGENCY VALVE FOE QIL TANKS AND OTHER CONTAINERS OF INFLAMMABLE FLUIDS.

Application filed November 30, 1923.

T00 whom it may, concern:

Be it known that l, Vroron J. 'BoeGmNo, a citizen of the United States, and aresident ofChicagqin the county ofCook and State of Illinois, have invented certain ,new and useful Improvements in Automatic Safety Emergency "Valves for Oil Tanks and Other Containers of lnflammableFluids, of which the following, when taken in connection with-thedrawing accompanying and formi'n-ga part hereof, is a specification.

This invention ,relates to ,n eans whereby, when inflammable gas at a determined pressure islgenerated or collected in oil tanks and other containers of inflammable fluids, thesame will be automatically discharged therefrom, without ignition of the ;gas or inflammable fluid contained in the tank or other container, thereby preventing an explosion ofthetank orother container.

Among the objects of theinvention is to obtain anantomatic safetyemergency valve which will not permit the continuous discharge or leakage of gaseous fluids froni an oil tank or other container, and which will, when thepressure in th'e tank is greater than the, adjusted resistance of the valve required toremove it f-romits seat,loe unseated and the,accumulated rgas orgaseous fluid will be permitted to flow from the tank or other container, to reduce the pressure therein. An additional object of theinvent-ion isto obtain a device of the kind recited which will permit air to flow into the tank or other container to replace oil or other "fluid drawn therefrom and permit acontinuous flow of said oil or. other fluid fromsaid tank or container. An additionalobject is toobtain a device of theflkind recited Which-will withstand climatic conditions when secured in .place on the top of an oil tank or other container which is unprotected and exposed to the weather and to rain and snow. An ad- ,tional object is to obtain a device of the "kind ,recited which comprises few parts, \vl11 cli are easily assembled, and from which a l-wornjpartrmay be removedhand replaced by an unused part, without removing the the faces thereof which are, respectively, in

per edgewhereof fits closely to the annular Serial No. 677,737.

nate a given part indicates said .il throughout the several figures of the draw- .iug wherever the same appears.

1 represents aportion of the top or uppcrsideof an oil tank or container of inflammable fluids. 2 represents an aperture through said top or upper side, 8 represents a ring member which is provided with flange at which rests on top 1, and is closely secured thereto. with packing material 3 interposed, by rivets 6, 6. Said .ringmcmberis also provided with an annular flange 5, whereby an annular table 01 supporting shoulder is obtained on which the ring member? is supported. The member with flanges t and 5, is preferably made by stamping or forcingit out ofductile metal, to obviate the finishing of. any of the facesthereof, while permitting aiiytight joints tobe madebetween S5 contact with the upperface of top 1. and the periphery 8 of member"? For thesame reason the member is also. preferahlv,

.stamped or forced out of ductile sheet metal blanks. Member 7 is provided with the horizontal table l), which rests on the annular table obtained by flange 5 on member 3. '10 representsaverticalannular wall on member/4', and 11 represents a hemisphere provided with perforations which will not permit a flame to pass therethrzmgh, and is preferably made of fine wire stamped or formed into semi-spherical shape. The upper edge of hemisphere 11 fits closely to the annular wall 10, and in addition to said close fit I secure it to said wall by solder or other equiv-talent metallic alloy. 12 represents a verticalannular all on member'r', and 13 represents an additional hemisphere, the upwall 12, and I also secure said hemisphere 13 to.sa1dannular wall, by means ofsolder or equivalent metallic alloy. 1 1- represents aperture in cover 14 which registers with thereof.

a cover which I prefer to makeof ductile sheet metal forced or stamped into shape, to avoid machining the same, to obtain a substantially air tight joint between the under side thereof and the upper face of flange 4, on which it normally rests. 15 represents an anular groovein cover 14, which is forced out of the body part of said cover, to obtain the annular flange 16 on the under side 1'? represents packing which is placed on the under side of cover 14, between it and flange 1-,in an" annular groove provided therefor. 18 represents a spider, which is provided with a central hub 19, having a circular aperture thcrethrough. The ends of the radiating arms or spokes of spider 18 are provided with projecting feet through which the screws 20, 20, extend into and through the vertical wall of member 7, to firmly secure said spider in place relative to said member 7 21 represents a bolt which is longitudinally movable in the circular aperture in the hub 19 or spider 18. 22 repreemits a spring which rests on head 23 of bolt 21, theupper end of said spring abutting against the under side of hub 19 of said spiderlS. The bolt 21 extends through an the circular aperture in hub 19. 2 1 represents a nut on bolt 21, the under side of which is in contact with the upper face of cover let. Tension of spring 22 is controlled by said nut 24-; the screwing of said nut down on said bolt 21 increases the tension of spring 22, and the turning of said nut to move it upward on said bolt lessens the tension of said spring. lVhen spring 22 is adjusted the nut 24 is locked on the bolt 21 by cup nut 25. The cup nut is mounted on the upper, end of bolt 21 to protect the screw threads thereon from the weather, as well as to act as a lock nut.

The normal position of cover 141- is closed, as in Fig. 1, and said cover is raisedin case of the rapid flow of gas from the tank through hemispheres 11 and 1.3, to obtain sufficient pressure on the under side of cover 14 to overcome the adjusted resilience of spring 22. Said rapid flow occurs only in what 1 term emergencies.

26 represents a goose neck which is .secured in cover 14:, as by screw threads 27. 28 represents a removable cover to aperture 29, at the top of the goose neck 26. 30 represents a check valve which may be introduced through apertures 29, and forced into substantially. the position illustrated in Fig. 2. Check valve 30 will permit the flow of air through the goose neck, in the direction indicated by the arrow 31, into the tank or container on which the device is mounted; but will not permit the flow of gas in the opposite direction through said goose neck.

By this means a flow of air into the tank or-other container will occur when oil or other liquid in the tank is withdrawn therefrom, while the gradual flow or leakage of gas or air from the tank or other container is prevented.

32 represents a screw threaded ring which is secured in the open end of the goose neck 26, and 83 represents metal woven wire on ring 82, to prevent the passage of dirt, dust or flame into and through the goose neck.

I claim: I

1. A member provided with a plurality of horizontal annular flanges, an additional member provided with an annular flange adapted to rest on the lower one of the first named annular flanges, in combination with a plurality of hemispheres respectively provided with a plurality of perforations and attached to said additional member, a r gidly mounted member provided with apertures and with a central aperture, a bolt longitudinally movable in said central aperture, a cover arranged to rest on said first named member when in normal position, an aperture in said cover through wihch said bolt extends, a nut on said bolt on the upper side of said cover, and a spring on said bolt below said apertured member arranged to yieldingly hold said cover in said normal position, a goose neck tube mounted on said cover, and a check valve in said goose neck arranged to permit air to flow from the atmosphere therethrough. V 2. A member provided with annular flanges, an additional member provided with an annular flange adapted to rest on the lower one of said first named flanges, a plurality of hemispheres respectively provided with a plurality of apertures, said hemispheres attached to said additional member, in combination with a cover normally resting on said first named member, adjustable means to yieldingly hold said cover in normal position and means to permit air to flow from the atmosphere through said cover and to prevent the flow of air in the opposite direction.

3. A member provided with an inner and an outer annular flange, an additional mem ber provided with an annular flange arranged to rest on said inner annular flange, hemispheres respectively provided with a plurality of apertures, said hemispheres attached to said additional member to be substantially concentric, a member provided with apertures and with a central aperture, rigidly secured above the inner one of said hemispheres, a cover arrangedto normally rest on said first named member, in combination'with adjustable means to yieldingly hold said cover in normal position and to return it to normal position when moved therefrom.

i. A member adaptedto be secured in an aperture in the top 01": a container of in-. flammable fluids,- said member provided with an inner annular flange, an additional member adapted to rest on said inner annular flange, hemispheres respectively provided with a plurality of perforations, attached to said additional member, in combination with a cover arranged to normally rest on said first named member, and adjustable means to yieldingly hold said cover in normal position and to return it to normal position when moved therefrom.

5. A plurality of hemispheres respectively provided with a plurality of perforations, means to rigidly mount said hemispheres to be substantially concentric and in spaced relation, and. a cover, in combination with adjustable means to yieldingly hold said cover in normal position to prevent the continuous flow of fluid through the perforations in said hemispheres, said yielding means adapted to permit movement of said cover from said normal position upon a deter mined fluid pressure being applied thereto 011 the side thereof adjacent to said hemispheres, and to return said cover to said. normal position When said determined pressure is reduced. and means to permit the flow of air from the atmosphere tlllOllgll said cover.

VICTOR J. BOGGIANO. 

